Was what i did wrong... some Jerry Springer shiett... you think he loves me?

ok so i would have never thought i would do this but, i went to go see my ex boyfriend 2day (he had a girlfriend until 2day), since i have the key to his apt. and thank goodness he was alone. he was laying down and i just sat next to him and he turned up and said "hey baby" i hadnt seen him in a lil more than a month. and then i said "hey" and i layed down next to him! and then we started to make out and 5mins later we where "doing it" then like 30mins later his "girlfriend" Carla and my boyfriends sister walk in (i guess i didnt close the door) and things got crazy! Carla started talking sh*t and going all crazy! but he told her "you know what Carla get outta here i dont wanna be with you, cuz i love Rosie" well he said more things but that was his point. I'm not making this up i totally swear it was true! And now i'm with him... I missed him soo much this July we'll be 4 years... but do you think i could trust him? this break up was because I broke up with him not him with me.